2G Rough idle.

[Joey2k21]

Hey everyone! I was driving one day in the rain and my car decided to quit on me. Thinking it might be my plug wires or plugs. I changed them in a parking lot. Crank no start. I ended up getting it towed home and then it sat for a few weeks as I had no motivation to fix the car. It’s coming to the point that I miss the car quite a bit. I changed the coils today and that ended up getting it to start. But with a terrible idle. Without giving it gas it won’t stay running for long. I pulled plug wires to see if they were firing and they were. At this point I’m at a loss. Any help will be very appreciated!!

 

[dwb]

Do you have a check engine light? Have you checked for boost leaks or unplugged/broken electrical connectors?

 

[Joey2k21]

Do you have a check engine light? Have you checked for boost leaks or unplugged/broken electrical connectors?

Haven’t checked for any boost leaks, I got a scanner today that I’m going to hook up when I have the time. Since this post I got it to idle fine. After giving it some gas it’ll die down. Let it sit and idle it will start idling fine. It makes me think it could be a fuel problem? Getting spark fine and seems to be getting air. All the ice in Maine with no garage makes it hard to work on without freezing.

 

[dwb]

If you don't find anything obvious with the OBDII scanner, definitely do a boost leak test (BLT). A small leak should be fixed for best performance but big leaks (or a whole bunch of small leaks) can cause serious issues like you are seeing. A big leak can often be found by visual inspection too (i.e. blown intake coupler), or carefully listening for vacuum leaks when idling.